all people (whether)they are old oy young try their best...为什么不能用no matter
问题描述：
all people (whether)they are old oy young try their best...为什么不能用no matter
答
whether ...or ...无论是 ...还是 ..
是固定搭配,
也可以用 no matter ,但
no matter 的正确句型是
all people no matter if they are old or young try their best